update

api/i_step_motor_ctrl_module.hpp

@@ -91,6 +91,8 @@ class I_StepMotorCtrlModule {
 #pragma pack()
 
  public:
+  virtual bool isbusy() = 0;
+
   virtual int32_t move_to(int32_t x, function<void(move_to_cb_status_t& status)> status_cb)                                         = 0;
   virtual int32_t move_by(int32_t dx, function<void(move_by_cb_status_t& status)> status_cb)                                        = 0;
   virtual int32_t move_to_zero(function<void(move_to_zero_cb_status_t& status)> status_cb)                                          = 0;